7136

• UCREFRP Catalog Number: 7136
• Author: Johnson, J. E., et al.
• Title: Flaming Gorge Tailwater Fisheries Investigations
• USFW Year: 1987.
• USFW - Doc Type: Trout Growth, Harvest, Survival, and Microhabitat Selection in the Green River, Utah, 1978-82
• Copyright Material: NO

LIST OF FIGURES
Figure
P_ aRe
1. Map of the Flaming Gorge tailwater showing major access
points and hydraulic simulation (PHABSIM) stations . . . . . . 13
2. Water temperatures recorded by thermographs at Tailrace
in 1973, prior to penstock modification, and the mean
temperatures from 1979-81, following modification . . . . . . . 28
3. Water temperature trends recorded by Ryan thermographs
placed at Tailrace, January-December, 1980 . . . . . . . . . . 29
4. Water temperature trends recorded by Ryan thermographs
placed at Little Hole, January-December, 1980 . . . . . . . . . 30
5. Water temperature trends recorded by Ryan thermographs
placed in Browns Park, January-December, 1980 . . . . . . . . . 31
6. Trends in mean annual harvest and total length of trout
creeled from the Flaming Gorge tailwater . . . . . . . . . . . 47
7. Loge adjusted monthly second and third year catch curves
from creel census for 1978-82 dye marked rainbow trout
cohorts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
8. Loge adjusted monthly second and third year catch curves
from creel census for 1978-82 dye marked cutthroat trout
cohorts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
9. Trends in electrofishing catch rate, February-May 1981
and October-May 1981-82, Tailrace Station, for cohorts
stocked as fingerlings the previous spring . . . . . . . . . . 72
10. Trends in electrofishing catch rate, February-May 1981
and November-May 1981-82, Little Hole Station, for cohorts
stocked as fingerlings the previous spring. . . . . . . . . . . 73
11. Trends in electrofishing catch rate, October-May 1980-81,
Browns Park Station . . . . . . . . . . . . . . . . . . . . . . 75
12. Winter facing velocities during 1981 and 1982 for:
a) random swimming; b) stationary swimming; and c) percent
of trout observed during 1982 in random swimming activity
at three ranges of discharges, adult and juvenile rainbow
trout, Flaming Gorge tailwater . . . . . . . . . . . . . . . . 109
13. Total watered channel area represented by each of three
PHABSIM stations as functions of discharge. . . . . . . . . . 121
(continued)
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